On 11/06/2018 08:52 AM, [email protected] wrote:
>
> And now I have another question: I want to compute numerical solutions
> in different widths of meshgrid, so I need different triangulations,
> dof_handlers, solution vectors. And I need to compute the finest one at
> first because I need to use the solution_finest as the 'exact solution'.
> The question is how to coarse the meshgrid after getting the
> solution_finest? If I want to refine the mesh, I will use
> 'triangulation.refine(1)'.
There is no function that automatically does this, but the following
will do the trick:
for (auto &cell : triangulation.active_cell_iterators())
cell->set_coarsen_flag();
triangulation.execute_coarsening_and_refinement();
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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